General Dynamics Electric Boat

General Dynamics Electric Boat Submarine construction & repair facilities. Multiple locations in Southeast Connecticut and in N Kingston, RI FCC License WRFB615 EB maintains a 9 site DMR Capacity Max trunk system. System ID is 87 Color Code for all channels in TRS is C08 Initially many talkgroups are encrypted. Other conventional frequencies are (or will be) listed on Connecticut and Rhode Island Business Radio systems pages. This page is an initial work in progress, if you can confirm information, please submit it.

Table of contents -

System Frequencies

Site 1 - Eastern Point Rd, Groton

Frequency	LCN	Usage	Color Code	Remarks	Confirmation
463.2750	23	Control	CC 8		2022.04.11 cg
463.6750	25	Voice	CC 8		2022.04.11 cg

Site 2 - Eastern Point Rd, Groton

Frequency	LCN	Usage	Color Code	Remarks	Confirmation
461.1250	43	Control	CC 8		2022.04.11 cg
463.5500	45	Voice	CC 8		2022.04.11 cg

Site 3 - Eastern Point Rd, Groton

Frequency	LCN	Usage	Color Code	Remarks	Confirmation
463.7000	63	Control	CC 8		2022.04.11 cg
464.0750	65	Voice	CC 8		2022.04.11 cg

Site 4 - Eastern Point Rd, Groton

Frequency	LCN	Usage	Color Code	Remarks	Confirmation
464.2250	83	Control	CC 8		2022.04.11 cg
464.7000	85	Voice	CC 8		2022.04.11 cg

Site 5 - Pequot Ave, New London

Frequency	LCN	Usage	Color Code	Remarks	Confirmation
463.2000	101	Voice	CC 8		2022.04.11 cg
461.5500	103	Control	CC 8		2022.04.11 cg
463.3500	105	Voice	CC 8		2022.04.11 cg
463.7375	107	Voice	CC 8		2022.04.11 cg

Site 6 - Eastern Point Rd, Groton

Frequency	LCN	Usage	Color Code	Remarks	Confirmation
461.7250	123	Control	CC 8		2022.04.11 cg
461.9750	125	Voice	CC 8		2022.04.11 cg
462.2500	127	Voice	CC 8		2022.04.11 cg

Site 7 - King's Highway, Groton

Frequency	LCN	Usage	Color Code	Remarks	Confirmation
461.0750	143	Control	CC 8		2022.04.11 cg
463.2000	145	Voice	CC 8		2022.04.11 cg
463.5000	147	Voice	CC 8		2022.04.11 cg

Site 8 - Eagle Park, Rt 2, N. Stonington

Frequency	LCN	Usage	Color Code	Remarks	Confirmation
461.0500	163	Control	CC 8		2022.04.11 cg
461.3750	165?	Voice	CC 8	Not confirmed

Site 9 - Quonset Point, N Kingston, RI

Frequency	LCN	Usage	Color Code	Remarks	Confirmation
461.2250	183	Control	CC 8		2023.02.22 jeffkett
461.8125	185	Voice	CC 8		2025.11.27 jeffkett
464.0125	187	Voice	CC 8		2023.02.22 jeffkett

Talkgroups

Talkgroup	Description	Encrypted	Notes	Confirmation/ReConfirmations
101	Security	Yes		2022.04.11 cg
108	Escorts	No		2025.11.27 jeffkett
202	unk	Yes		2023.02.22 jeffkett
202	Quonset FD	Yes		2021.04.21 cg
204	unk	Yes		2023.02.22 jeffkett

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